51481795 has 16 divisors (see below), whose sum is σ = 63060480. Its totient is φ = 40338144.

The previous prime is 51481753. The next prime is 51481823. The reversal of 51481795 is 59718415.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 51481795 - 2⁷ = 51481667 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79744 + ... + 80386.

It is an arithmetic number, because the mean of its divisors is an integer number (3941280).

Almost surely, 2^51481795 is an apocalyptic number.

51481795 is a deficient number, since it is larger than the sum of its proper divisors (11578685).

51481795 is a wasteful number, since it uses less digits than its factorization.

51481795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954.

The product of its digits is 50400, while the sum is 40.

The square root of 51481795 is about 7175.0815326378. The cubic root of 51481795 is about 372.0070984694.

The spelling of 51481795 in words is "fifty-one million, four hundred eighty-one thousand, seven hundred ninety-five".